dude, this will never fit in a Needle... the Needle cab is only 12cm wide, this driver is 13cm....
An externally hosted image should be here but it was not working when we last tested it.
Errr ... which is why I said in my first post in this thread (about 8 posts up) that I increased the cabinet width from 10cm (internal) till 13cm ...
Maybe there is some misscommunication between us.
If the Needles are a small fullranger in a low tuned Mass loaded transmission line, then I just want to adjust the Needle to a SPH-60x.
Semantics aside, I modeled the Needle with the TB W3 and it didn't look as good as with the SPH-60x, so I was hoping on some second opinion.
Sorry for the confusion ...
Maybe there is some misscommunication between us.
If the Needles are a small fullranger in a low tuned Mass loaded transmission line, then I just want to adjust the Needle to a SPH-60x.
Semantics aside, I modeled the Needle with the TB W3 and it didn't look as good as with the SPH-60x, so I was hoping on some second opinion.
Sorry for the confusion ...
Henkjan: Thanks! Quite a difference with what I/Hornresp expected. Hmmm ... seems I will have to take a look at MJK's software then.
During googleing I came across some dutch sites and I see now that it was your site they sometimes referred to. Small world.
Planet10: Thanks for clearing this out. Feel free to move everything from my first post on, to a separate thread if you consider this necessarily.
I remembered that one of the alternative drivers for the Cyburgs Needle was a 6" driver, hence why I tought these designs were still named after the Needles. Now that I looked it up, I found it was the Markaudio Alpair 6, which is 4" wide, contradictory to its name.
During googleing I came across some dutch sites and I see now that it was your site they sometimes referred to. Small world.
Planet10: Thanks for clearing this out. Feel free to move everything from my first post on, to a separate thread if you consider this necessarily.
I remembered that one of the alternative drivers for the Cyburgs Needle was a 6" driver, hence why I tought these designs were still named after the Needles. Now that I looked it up, I found it was the Markaudio Alpair 6, which is 4" wide, contradictory to its name.
Dynavox FR88EX
I have a pair of Needles (in store at the moment after moving house) with Visaton FRS8's and have been quite happy with them.
Reading through this thread again I see that there are a number of alternatives available now, most have been covered in depth in this thread.
Looking at the Spectrum Audio site I see they are offering Needle hardware kits that include a range of drivers, amongst them they list the Dynavox FR88EX which I haven't seen mentioned in this thread or indeed on the DiyAudio site.
I wondered if anyone has tried these units in a pair of Needles?
Regards - Jem
I have a pair of Needles (in store at the moment after moving house) with Visaton FRS8's and have been quite happy with them.
Reading through this thread again I see that there are a number of alternatives available now, most have been covered in depth in this thread.
Looking at the Spectrum Audio site I see they are offering Needle hardware kits that include a range of drivers, amongst them they list the Dynavox FR88EX which I haven't seen mentioned in this thread or indeed on the DiyAudio site.
I wondered if anyone has tried these units in a pair of Needles?
Regards - Jem
Running Needles Sims
Hi Henkjan,
I wondered if you could run some needles sims on some drivers that I was thinking about trying out in some needles. They are:
Tangband W4-1320
Fs: 75 Hz
SPL: 89 dB 1W/1m
Vas: .21 cu. ft.
Qms: 1.50
Qes: 0.48
Qts: 0.37
Xmax: 3 mm
Wharfedale driver
Re 4.88
Qes 0.51
Qms 2.3
Qts 0.42
Vas 3.08 L
Fs 80.48
Le 0.249
Mms 4.121
Spl 86.84
Thanks for your help,
Jon
Hi Henkjan,
I wondered if you could run some needles sims on some drivers that I was thinking about trying out in some needles. They are:
Tangband W4-1320
Fs: 75 Hz
SPL: 89 dB 1W/1m
Vas: .21 cu. ft.
Qms: 1.50
Qes: 0.48
Qts: 0.37
Xmax: 3 mm
Wharfedale driver
Re 4.88
Qes 0.51
Qms 2.3
Qts 0.42
Vas 3.08 L
Fs 80.48
Le 0.249
Mms 4.121
Spl 86.84
Thanks for your help,
Jon
Dear Henkjan,
Many thanks for the offer for the Dynavox FR88EX.
These are the details from the Spectrum Audio site;
88 mm Breitbandlautsprecher,
95-32000 Hz Übertragungsbereich,
84,3 dB Kennschalldruck,
25 mm UH-Schwingspule,
15 Watt belastbar,
2,27 Gramm bewegte Masse,
Aluminium-Membran ,
Gummi-Sicke, Leichtmetallgusskorb, Neodynmagnet,
Nennimpedanz/Gleichstromwiderstand: 8/6,0 Ohm
Resonanzfrequenz: 95 Hz
Gütefaktoren(Qms/Qes/Qts): 1,96 / 0,62 / 0,47
Äquivalenzvolumen(Vas): 1,27 Liter
Effektive Membranfläche(Sd): 27,34 cm²
Antriebsfaktor(BL): 3,31 Tm
Schwingspulenüberhang(Xmax): 3 mm
Schwingspuleninduktivität(Le): 0,045 mH
Kind regards - Jem
Many thanks for the offer for the Dynavox FR88EX.
These are the details from the Spectrum Audio site;
88 mm Breitbandlautsprecher,
95-32000 Hz Übertragungsbereich,
84,3 dB Kennschalldruck,
25 mm UH-Schwingspule,
15 Watt belastbar,
2,27 Gramm bewegte Masse,
Aluminium-Membran ,
Gummi-Sicke, Leichtmetallgusskorb, Neodynmagnet,
Nennimpedanz/Gleichstromwiderstand: 8/6,0 Ohm
Resonanzfrequenz: 95 Hz
Gütefaktoren(Qms/Qes/Qts): 1,96 / 0,62 / 0,47
Äquivalenzvolumen(Vas): 1,27 Liter
Effektive Membranfläche(Sd): 27,34 cm²
Antriebsfaktor(BL): 3,31 Tm
Schwingspulenüberhang(Xmax): 3 mm
Schwingspuleninduktivität(Le): 0,045 mH
Kind regards - Jem
I look around for other designs and I see lots of other ideas but what makes the Needles so good for me is;
1/. The amazing sound they produce, I'm still using the FRS8.
2/. The small footprint - mine are 125 x 215 the 215 taken up with an MDF front baffle, makes it a lot easier to change drive units and the cut out in the actual cabinet is the size of the drive unit surround
3/. Lastly and this is the most important as far as I am concerned - the height of the drivers. This gives a sound stage just above my ears and I think it is the reason for their superb imaging.
Jem
Anyone else think the same?
1/. The amazing sound they produce, I'm still using the FRS8.
2/. The small footprint - mine are 125 x 215 the 215 taken up with an MDF front baffle, makes it a lot easier to change drive units and the cut out in the actual cabinet is the size of the drive unit surround
An externally hosted image should be here but it was not working when we last tested it.
3/. Lastly and this is the most important as far as I am concerned - the height of the drivers. This gives a sound stage just above my ears and I think it is the reason for their superb imaging.
Jem
Anyone else think the same?
Dear Dave,
Many thanks for your interest, you are of course quite right about the 45 deg, I do intend to make another baffle from some thick alloy I have, some day
What I did with the MDF was to make the hole as large as the speaker chassis would allow and still be able to seal.
Though I could, thinking about it file the 45 deg angle in the MDF without going all the way down (leaving a slight flat at the bottom) it to avoid filing into the mounting screws.
Kind regards - Jem
Many thanks for your interest, you are of course quite right about the 45 deg, I do intend to make another baffle from some thick alloy I have, some day
What I did with the MDF was to make the hole as large as the speaker chassis would allow and still be able to seal.
Though I could, thinking about it file the 45 deg angle in the MDF without going all the way down (leaving a slight flat at the bottom) it to avoid filing into the mounting screws.
Kind regards - Jem
I too would be interested in Henkyan's reply.
Spectrum Audio http://www.spectrumaudio.de/
Recommend:
2 * Widerstand 1,8 Ohm MOX 10 Watt
2 * Kondensator 22 µF 250V MKP
2 * Induktivität 0,27 mH 0,7 mm Drahtstärke
With their Needle kit
Regards - Jem
Spectrum Audio http://www.spectrumaudio.de/
Recommend:
2 * Widerstand 1,8 Ohm MOX 10 Watt
2 * Kondensator 22 µF 250V MKP
2 * Induktivität 0,27 mH 0,7 mm Drahtstärke
With their Needle kit
Regards - Jem